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  ~ Copyright 2002-2020 the original author or authors.
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      https://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
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  -->
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            height: 100%;
            margin: 0;
            width: 100%;
            overflow: hidden;
        }

        #graphiql {
            height: 100vh;
        }
    </style>

    <!--
      This GraphiQL example depends on Promise and fetch, which are available in
      modern browsers, but can be "polyfilled" for older browsers.
      GraphiQL itself depends on React DOM.
      If you do not want to rely on a CDN, you can host these files locally or
      include them directly in your favored resource bunder.
    -->
    <script
            crossorigin
            src="https://unpkg.com/react@16/umd/react.development.js"
    ></script>
    <script
            crossorigin
            src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"
    ></script>

    <!--
      These two files can be found in the npm module, however you may wish to
      copy them directly into your environment, or perhaps include them in your
      favored resource bundler.
     -->
    <link rel="stylesheet" href="https://unpkg.com/graphiql/graphiql.min.css" />
</head>

<body>
<div id="graphiql">Loading...</div>
<script
        src="https://unpkg.com/graphiql/graphiql.min.js"
        type="application/javascript"
></script>
<script>
    function graphQLFetcher(path) {
        return (graphQLParams, options = {}) => fetch(
            `${location.protocol}//${location.host}${path}`,
            {
                method: 'post',
                headers: {
                    ...options.headers,
                    Accept: 'application/json',
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify(graphQLParams),
                credentials: 'omit',
            },
        ).then(function (response) {
            return response.json().catch(function () {
                return response.text();
            });
        });
    }

    const params = new URLSearchParams(window.location.search);
    const path = params.get("path") || "/graphiql";
    const gqlFetcher = graphQLFetcher(path);
    ReactDOM.render(
        React.createElement(GraphiQL, {
            fetcher: gqlFetcher,
            defaultVariableEditorOpen: true,
            headerEditorEnabled: true
        }),
        document.getElementById('graphiql'),
    );
</script>
</body>
</html>
